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• W3204451971 abstract "Elevation of hypoxia-inducible factor 1 protein has been shown to be protective in acute kidney injury and HIF1α enhancing drug therapies are currently in clinical trials for the treatment of anemia of chronic kidney disease. Despite its benefits, long-term HIF1 elevation seems to be associated with additional effects in the kidneys such as tubulointerstitial fibrosis. To better understand the effects of prolonged HIF1 exposure, assessment of baseline and post-therapy levels of HIF1α and other related biomarkers is essential. In this study, we assessed the effect of HIF1α enhancement using prolyl hydroxylase inhibitor (PHD-I) DMOG, on a key profibrotic marker of kidney disease. In specific, we examined the change in expression of Collagen 4 subunit A2 in cultured urinary cells of CKD patients pre and post 24-hour exposure to 1mM DMOG. Our results show that besides HIF1α enhancement, COL4A2 protein is suppressed in presence of DMOG. To determine if this effect is mediated by HIF1, we used HIF1α gene silencing in HEK293 cells and examined the effect of DMOG on protein and gene expression of COL4A2 post 24-hour exposure. We showed that silencing HIF1α reverses and amplifies the expression of COL4A2 in HEK293 cells. Our data suggest that HIF1 directly regulates the expression of COL4A2 in kidney cells and that HIF1α enhancing therapy has suppressive effects on COL4A2 that may be clinically relevant and must be considered in determining the safety and efficacy of these drugs in the treatment of anemia." @default.
• W3204451971 created "2021-10-11" @default.
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• W3204451971 date "2021-10-01" @default.
• W3204451971 modified "2023-10-06" @default.
• W3204451971 title "Suppression of collagen IV alpha‐2 subunit by prolyl hydroxylase domain inhibition via hypoxia‐inducible factor‐1 in chronic kidney disease" @default.
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• W3204451971 doi "https://doi.org/10.1002/prp2.872" @default.
• W3204451971 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8495681" @default.
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